/* =========================================================================
   AmazingDens — gallery page
   Hero banner, filter chips, CSS-columns masonry grid, and lightbox.
   Design tokens + layout primitives come from shared.css.
   ========================================================================= */

.page-gallery {
    background: var(--bg);
}

/* -------------------------------------------------------------------------
   Hero (smaller than home hero — no background image)
   ------------------------------------------------------------------------- */
.gallery-hero {
    padding-top: calc(var(--header-h) + var(--sp-9));
    padding-bottom: var(--sp-8);
    border-bottom: 1px solid var(--border);
}

.gallery-hero .eyebrow {
    margin-bottom: var(--sp-4);
}

.gallery-hero__display {
    font-family: var(--font-display);
    font-size: var(--fs-3);
    font-weight: 300;
    line-height: 1;
    letter-spacing: -0.02em;
    font-variation-settings: "opsz" 144, "SOFT" 50;
    color: var(--ink);
    max-width: 22ch;
    margin-bottom: var(--sp-5);
    text-wrap: balance;
}

.gallery-hero__display em {
    font-style: italic;
    color: var(--accent-soft);
    font-variation-settings: "opsz" 144, "SOFT" 100;
}

.gallery-hero__lede {
    font-size: var(--fs-0);
    line-height: 1.6;
    color: var(--ink-muted);
    max-width: 42ch;
}

/* -------------------------------------------------------------------------
   Filter chips
   ------------------------------------------------------------------------- */
.gallery-filters {
    position: sticky;
    top: var(--header-h);
    z-index: 10;
    padding-block: var(--sp-5);
    background: rgba(39, 39, 39, 0.86);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border-bottom: 1px solid var(--border);
}

.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-3);
}

.chip {
    --chip-bg: transparent;
    --chip-border: var(--border-strong);
    --chip-color: var(--ink-muted);

    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    padding: 0.55rem 1.1rem;
    font-family: var(--font-ui);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    color: var(--chip-color);
    background: var(--chip-bg);
    border: 1px solid var(--chip-border);
    border-radius: 999px;
    cursor: pointer;
    transition: background var(--dur-fast) var(--ease-out),
                color var(--dur-fast) var(--ease-out),
                border-color var(--dur-fast) var(--ease-out),
                transform var(--dur-fast) var(--ease-out);
}

.chip:hover {
    --chip-color: var(--ink);
    --chip-border: rgba(249, 249, 249, 0.35);
}

.chip.is-active {
    --chip-bg: var(--accent);
    --chip-color: var(--ink);
    --chip-border: var(--accent);
}

.chip.is-active:hover {
    --chip-bg: var(--accent-soft);
    --chip-border: var(--accent-soft);
}

.chip__count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 1.6rem;
    height: 1.2rem;
    padding-inline: 0.35rem;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0;
    background: rgba(249, 249, 249, 0.08);
    border-radius: 999px;
    color: var(--ink-muted);
    transition: background var(--dur-fast) var(--ease-out),
                color var(--dur-fast) var(--ease-out);
}

.chip.is-active .chip__count {
    background: rgba(28, 28, 28, 0.4);
    color: var(--ink);
}

/* -------------------------------------------------------------------------
   Masonry grid (CSS columns)
   ------------------------------------------------------------------------- */
.gallery-section {
    padding-block: var(--sp-8) var(--sp-10);
}

.gallery-grid {
    column-count: 1;
    column-gap: var(--sp-5);
}

@media (min-width: 640px) {
    .gallery-grid { column-count: 2; }
}
@media (min-width: 1100px) {
    .gallery-grid { column-count: 3; }
}
@media (min-width: 1500px) {
    .gallery-grid { column-count: 4; }
}

.gallery-item {
    break-inside: avoid;
    margin: 0 0 var(--sp-5);
    display: block;
    opacity: 1;
    transition: opacity var(--dur-base) var(--ease-out),
                transform var(--dur-base) var(--ease-out);
}

.gallery-item.is-hidden {
    display: none;
}

.gallery-item__button {
    position: relative;
    display: block;
    width: 100%;
    padding: 0;
    background: var(--bg-raised);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: zoom-in;
    color: inherit;
    transition: border-color var(--dur-base) var(--ease-out),
                transform var(--dur-base) var(--ease-out);
}

.gallery-item__button:hover {
    border-color: var(--border-strong);
    transform: translateY(-3px);
}

.gallery-item__button img {
    display: block;
    width: 100%;
    height: auto;
    transition: transform var(--dur-slow) var(--ease-out);
}

.gallery-item__button:hover img {
    transform: scale(1.03);
}

.gallery-item__caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: var(--sp-6) var(--sp-4) var(--sp-4);
    color: var(--ink);
    font-family: var(--font-ui);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-align: left;
    background: linear-gradient(180deg, rgba(28, 28, 28, 0) 0%, rgba(28, 28, 28, 0.85) 100%);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity var(--dur-base) var(--ease-out),
                transform var(--dur-base) var(--ease-out);
    pointer-events: none;
}

.gallery-item__button:hover .gallery-item__caption,
.gallery-item__button:focus-visible .gallery-item__caption {
    opacity: 1;
    transform: translateY(0);
}

/* -------------------------------------------------------------------------
   Lightbox
   ------------------------------------------------------------------------- */
.lightbox[hidden] {
    display: none !important;
}

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: grid;
    place-items: center;
    padding: var(--sp-5);
    background: rgba(12, 12, 12, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    animation: lightbox-fade var(--dur-base) var(--ease-out);
}

@keyframes lightbox-fade {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.lightbox__stage {
    max-width: min(90vw, 1200px);
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
    align-items: center;
    margin: 0;
}

.lightbox__stage img {
    max-width: 100%;
    max-height: 78vh;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    background: var(--bg-raised);
}

.lightbox__stage figcaption {
    font-family: var(--font-ui);
    font-size: 0.92rem;
    color: var(--ink-muted);
    text-align: center;
    letter-spacing: 0.02em;
}

.lightbox__close,
.lightbox__nav {
    position: absolute;
    width: 3rem;
    height: 3rem;
    display: grid;
    place-items: center;
    font-family: var(--font-display);
    font-size: 1.8rem;
    line-height: 1;
    color: var(--ink);
    background: rgba(28, 28, 28, 0.72);
    border: 1px solid var(--border-strong);
    border-radius: 50%;
    cursor: pointer;
    transition: background var(--dur-fast) var(--ease-out),
                transform var(--dur-fast) var(--ease-out);
}

.lightbox__close:hover,
.lightbox__nav:hover {
    background: var(--accent);
}

.lightbox__close {
    top: var(--sp-5);
    right: var(--sp-5);
}

.lightbox__nav--prev { left: var(--sp-5); top: 50%; transform: translateY(-50%); }
.lightbox__nav--next { right: var(--sp-5); top: 50%; transform: translateY(-50%); }

.lightbox__nav--prev:hover { transform: translateY(-50%) translateX(-2px); }
.lightbox__nav--next:hover { transform: translateY(-50%) translateX(2px); }

/* Prevent scroll on the body while lightbox is open. */
body.is-lightbox-open {
    overflow: hidden;
}

/* -------------------------------------------------------------------------
   Hero reveal gate — apply only under .js-ready so a failed JS load
   doesn't leave the heading invisible.
   ------------------------------------------------------------------------- */
.js-ready .gallery-hero .eyebrow,
.js-ready .gallery-hero__display,
.js-ready .gallery-hero__lede {
    opacity: 0;
    transform: translateY(16px);
}

@media (prefers-reduced-motion: reduce) {
    .js-ready .gallery-hero .eyebrow,
    .js-ready .gallery-hero__display,
    .js-ready .gallery-hero__lede {
        opacity: 1;
        transform: none;
    }
}